On Wednesday, Sen. John McCain, R-Ariz., became the seventh GOP senator to announce his opposition to Kagan. On USA Today's website, McCain wrote that he will vote against Kagan because, as dean of Harvard Law School, "she unmistakably discouraged Harvard students from considering a career in the military."

In her confirmation hearings, Kagan said she limited, but did not bar, the military's access to the campus. She said she felt the Pentagon's "don't ask, don't tell" policy violated Harvard's anti-discrimination code.